import React, { useEffect, useState, useRef } from 'react'
import { PageHeader, Steps, Button, Form, Input, Select, message, notification } from 'antd'
import style from './News.module.css'
import { newCategories, getNewsInfo,updateNewsInfo } from '@api'
import NewsEditor from '@components/SandBox/NewsEditor/index';
const { Step } = Steps;
const { Option } = Select;

export default function NewsUpdate(props) {
  // 进度步骤号
  const [current, setCurrent] = useState(0)
  // 定义form的ref
  const NewsForm = useRef(null)
  // 新闻分类
  const [categoryList, setCategoryList] = useState([])
  // 第一页表单数据
  const [formInfo, setformInfo] = useState({})
  // 第二页富文本数据
  const [content, setContent] = useState("")
  // antd的栅格，一共24份
  const layout = {
    labelCol: { span: 2 },
    wrapperCol: { span: 22 },
  }
  /*--------------------------------------hooks调用方法-----------------------------------------------------------------*/
  /*--------------------------------------hooks调用方法-----------------------------------------------------------------*/
  /*--------------------------------------hooks调用方法-----------------------------------------------------------------*/
  /*--------------------------------------hooks调用方法-----------------------------------------------------------------*/
  useEffect(() => {
    getNewCategories()
    get_news_info()
  }, [])
  /*--------------------------------------方法--------------------------------------------------------------------------*/
  /*--------------------------------------方法--------------------------------------------------------------------------*/
  /*--------------------------------------方法--------------------------------------------------------------------------*/
  /*--------------------------------------方法--------------------------------------------------------------------------*/
  // 下一步
  const handleNext = () => {
    if (current === 0) {
      NewsForm.current.validateFields().then(res => {
        setformInfo(res)
        setCurrent(current + 1)
      })
    } else {
      if (content === "" || content.trim() === "<p></p>") {
        message.error("新闻内容不能为空")
      } else {
        setCurrent(current + 1)
      }
    }
  }
  // 上一步
  const handlePrevious = () => {
    setCurrent(current - 1)
  }
  // 获取新闻分类
  const getNewCategories = () => {
    newCategories().then((res) => {
      setCategoryList(res.data)
    })
  }
  // 获取新闻信息
  const get_news_info = () => {
    getNewsInfo({
      id: props.match.params.id,
      _expand: ['category', 'role']
    }).then((res) => {
      let { title, categoryId, content } = res.data
      NewsForm.current.setFieldsValue({
        title,
        categoryId
      })
      setContent(content)
    })
  }
  // 提交
  const handleSave = (auditState) => {
    updateNewsInfo({
      id: props.match.params.id,
      ...formInfo,
      "content": content,
      "auditState": auditState,
    }).then(() => {
      props.history.push(auditState === 0 ? '/news-manage/draft' : '/audit-manage/list')
      notification.info({
        message: `通知`,
        description:
          `您可以到${auditState === 0 ? '草稿箱' : '审核列表'}中查看您的新闻`,
        placement: "bottomRight"
      })
    })
  }
  return (
    <div>
      <PageHeader className="site-page-header" title="更新新闻" onBack={() => props.history.goBack()} subTitle="This is a subtitle" />
      <Steps current={current}>
        <Step title="基本信息" description="新闻标题，新闻分类" />
        <Step title="新闻内容" description="新闻主体内容" />
        <Step title="新闻提交" description="保存草稿或者提交审核" />
      </Steps>
      <div style={{ marginTop: "50px" }}>
        <div className={current === 0 ? '' : style.active}>
          <Form {...layout} name="basic" ref={NewsForm} >
            <Form.Item label="新闻标题" name="title" rules={[{ required: true, message: 'Please input your username!' }]} >
              <Input />
            </Form.Item>
            <Form.Item label="新闻分类" name="categoryId" rules={[{ required: true, message: 'Please input your username!' }]} >
              <Select>
                {
                  categoryList.map(item =>
                    <Option value={item.id} key={item.id}>{item.title}</Option>
                  )
                }
              </Select>
            </Form.Item>
          </Form>
        </div>
        <div className={current === 1 ? '' : style.active}>
          <NewsEditor getContent={(value) => { setContent(value) }} content={content}></NewsEditor>
        </div>
        <div className={current === 2 ? '' : style.active}></div>

      </div>
      <div style={{ marginTop: "50px" }}>
        {
          current > 0 && <Button onClick={handlePrevious}>上一步</Button>
        }
        {
          current < 2 && <Button type="primary" onClick={handleNext}>下一步</Button>
        }
        {
          current === 2 && <span>
            <Button type="primary" onClick={() => handleSave(0)}>保存草稿箱</Button>
            <Button danger onClick={() => handleSave(1)}>提交审核</Button>
          </span>
        }
      </div>
    </div>
  )
}
